2D is flat. That is a fact. Your screen is flat as well.Imagine standing on your screen. Up and down are Z, forward and backward are Y, and side ways is X. These are the coordinates of the 3D world. Your screen however, is not facing to the sky. You are looking into the screen. There forup and down the screen is Z, in and out of the screen is Y,and side to side is X.

All 2D worlds consist of squares, and the 3 dimensional form of a square is a cube. There for all 3D worlds consist of cubes. Every thing fits in side a box no matter how smooth.

This was developed with Blender a Free 3D modeling program and 3D game engine. NOTE: Everything is in a box.